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Rare-Earth-doped Laser Materials: Spectroscopy and Laser Properties

Published online by Cambridge University Press:  11 July 2012

Larry D. Merkle
Larry D. Merkle*
Affiliation:
US Army Research Laboratory, Attn RDRL-SEE-M, 2800 Powder Mill Rd, Adelphi, MD 20783, U.S.A.
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Abstract

Trivalent rare earth ions in crystalline or fiber hosts are among the most successful of laser materials, but new dopant-host combinations and more detailed understanding of existing materials continue to be needed. This paper presents a few examples from the work of our team at the Army Research Laboratory, highlighting the interrelation between spectroscopic properties and laser behavior. It focuses on bulk solids, though rare-earth-doped fiber lasers are also extremely important. One system discussed is Nd:YAG, particularly concentration quenching in heavily doped ceramic YAG. Spectroscopic properties of Yb:Y2O3 and Yb:Sc2O3 help to elucidate their laser performance. Spectra indicate that Er:YAG is more promising than Er:Sc2O3 for room temperature laser operation, but that the reverse is true for operation at and somewhat above liquid nitrogen temperature.

Keywords

laserlanthanideoptical properties
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1471: Symposium YY – Rare-Earth-Based Materials , 2012 , mrss12-1471-yy09-06
Copyright
Copyright © Materials Research Society 2012

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References

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